Figure 2.

Assemblies in absence of light (solution, 293 K→263 K→293 K). Left: FTIR absorption spectra of a 2.3 mM solution of TATA‐C13 in CHCl₃ recorded during cooling process between 293 K and 263 K (red to blue lines, ≈0.4 K.min⁻¹, one spectrum recorded every 5 K). Right: Degree of association as function of temperature as deduced from variable‐temperature FTIR spectra. A spectrum was recorded at 293 K after the cooling process (black dotted line and empty circle).